上海埃飞科技
Worldwide Technology(S. H)产品展示
纹影仪
一种新的低成本、便携、灵活和易于使用的技术
概述
Schlieren成像技术是一种流行的技术,可以对空气和水等透明介质实现可视化。
这些形变可以与温度、密度、压力等重要有关物理参数合成,所以schlieren效应
可以用来创造热流,气流,冲击波,强烈的图像声音,以及其他许多在科学和工程中至关重要的现象。
Schlieren是在19世纪发展起来的,依赖于通过一个尖锐的截止滤光片通过光线形成图像。
被布置为使得射线强度沿着滤波器的边缘具有陡峭的导数。这样的安排使在光线的路径偏差小,
产生从非偏移水平图像中灰度变化大。
传统的纹影系统虽然使用光学准直,例如镜子或透镜,这样有效地限制了光线。
所测试的面积与光学的大小有关,使得这种技术使用起来非常困难和昂贵。
与传统的schlieren系统不同的是,我们的数字聚焦schlieren系统是可移植的和自动对准的,无需用于schlieren成像昂贵的成本和复杂的安装要求
观测面积大约是投影面积的一半,所以是12英尺(4米)的对角线
投影可以给出一个有6英尺(2米)对角线的区域
工作原理
美国spectabit的便携式投影纹影系统是基于我们的专利数字聚焦纹影技术美国专利9232117 B2)。
其使用数字投影仪在屏幕后面投射线条图案对象。屏幕光线反射回stubetm光学系统,
其通过截止滤波器在到达相机传感器。照相机聚焦在纹影物体上(例如,热流),
而不是屏幕或截止滤波器,景深太浅,屏幕模式基本上是完全散焦。
在没有密度梯度的情况下,光线从屏幕直接流向截止点。
滤光片,它能阻挡大约一半的光线。
包含的高级图像处理算法
schlierenviewtm软件应用于去除背景噪声,
提高对比度,保证在一个背景均匀强度。
冷空气气流、气体蒸气和冲击波形成不同密度的区域,从而弯曲光线,
所以扭曲背景屏幕上投影的线条图案。失真改变了通过的光的数量。
通过对图像传感器的截止滤波器。在结果图像中,气流和冲击波的出现非常明显。
在灰色背景下蚀刻的聚焦光和暗物体。
这个系统是非常敏感的都可以看到温暖的空气从伸出的手掌上升起
标准系统的视频速率应用于1920 1080 高清分辨率,
用于高速和专门的解决方案。要么是竖屏方向(长维度垂直)
或者景观方向(长维度水平)可以使用(请在订购时指定)。
最好的结果是投射到平坦的白色背景上,例如:白色的墙壁。
传统的投影屏幕可以改善图像质量,但不需要高水平背景光。
呈现(如日光或阳光直射)。
射程可测试到30英尺(10米),但更大的距离。可在低背景光下使用
标准镜头的焦距85毫米,但不同的F-mount镜头可用于优化不同工作距离和视野的系统。
欢迎联系咨询各种信息对系统性能的影响;长焦距透镜一般提供更高的灵敏度,但减少了磁场。
灵敏度更高版本的系统基于一个短线Pro光学系统与一个固定焦距镜头。
summary
Schlieren Imaging is a popular technique that enables visualization of transparent media such as air and water.
These deformation can be synthesized with important physical parameters such as temperature, density and pressure, so the schlieren effect
Can be used to create heat currents, airflow, shock waves, strong image sounds, and many other phenomena crucial in science and engineering.
Schlieren Was developed in the 19th century and relied on forming images through light through a sharp cut-off filter.
Are arranged such that the ray intensity has a steep derivative along the edge of the filter. Such arrangement makes small bias in the path of light,
Generduce large gray variation from nonoffset horizontal images.
Traditional shading systems may use optical collimation, such as mirrors or lenses, which effectively limit light.
The area tested is related to the size of the optics, making this technique very difficult and expensive to use.
Unlike conventional schlieren systems, our digital-focused schlieren system is portable and automatically aligned without the costly cost and complex installation requirements for schlieren imaging
The observed area is about half the projected area, so it is a 12 feet (4 meters) diagonal
The projection gives an area with a 6-foot (2 m) diagonal
operational principle
The US spectabit portable projection tattoo system is based on our patent digital focused shading technology US Patent 9232117 B2).
It uses a digital projector to project line pattern objects behind the screen. Screen light is reflected back to the stubetm optics,
It passes through the cutoff filter before reaching the camera sensor. The camera focuses on the shadow object (e. g., heat flow),
Instead of the screen or cut-off filter, the depth of field is too shallow, and the screen mode is basically completely defocused.
In the absence of a density gradient, light flows directly from the screen to the cutoff point.
Filter, which blocks about half the light.
Included with the advanced image-processing algorithms
schlierenviewtm Software is applied to remove the background noise,
Improve the contrast to ensure a uniform intensity in a background.
Cold air currents, gas vapours and shock waves form areas of different densities, thus bending light,
So twist the line pattern projected on the background screen. Distortion changes the amount of light passed through.
By using a cutoff filter on the image sensor. In the resulting images, the appearance of airflow and shock waves is very evident.
Focused light and dark objects etched in a gray background.
This system is very sensitive to all can see warm air rising from the extended palm
The video rate of the standard system is applied to the 1920 1080 HD resolution,
For high-speed and specialized solutions. Either the portrait orientation (long dimension vertical)
Or the landscape direction (long dimension level) can be used (please specify when ordering).
The best result is projected onto a flat white background, such as a white wall.
Traditional projection screens can improve image quality, but do not require a high level of background light.
Presentation (such as sunlight or direct sunlight).
The range can be tested up to 30 feet (10 meters), but at a greater range. Available under low-background light
The standard lens has a focal length of 85 mm, but different F-mount lenses can be used to optimize systems for different working distances and field of view.
For the impact of information on system performance; telephoto lenses generally provide higher sensitivity but reduced magnetic field.
The higher sensitivity version of the system is based on a short-line Pro optical system with a fixed focal length lens.
因用于机器人各方面应用且与大多数机器人类型兼容,AutoCal系统可以检测出机器人自身构造和工具中心点(TCP)的 突然改变或偏离,并且该系统无需人为干涉就自动地更正这些误差。
AutoCal系统-Dynalog的先进水平校准技术,Dynalog是机器人单元标定技术的世界领导者。它的主流产品DynaCal 系统,被应用于离线的机器人单元校准,并作为最精确的和技术先进的机器人校准程序为许多机器人制造商和终端使用者所接受。AutoCal 系统将已证实的DynaCal校准技术结合到一个在线的全自动系统中,该系统专为程序控制和复原而设计的,价格低廉。
AutoCal系统提供在线的机器人校准方案,旨在快速和自动地保证机械设备的工作性能。因用于机器人各方面应用且与大多数机器人类型兼容,AutoCal系统可以检测出机器人自身构造和工具中心点(TCP)的 突然改变或偏离,并且该系统无需人为干涉就自动地更正这些误差。这意味着不用猜测哪里会出错,不用浪费宝贵时间在机器人程序重复校准上,产品品质无任何损失。
AutoCal系统-Dynalog的先进水平校准技术,Dynalog是机器人单元标定技术的世界领导者。它的主流产品DynaCal 系统,被应用于离线的机器人单元校准,并作为最精确的和技术先进的机器人校准程序为许多机器人制造商和终端使用者所接受。AutoCal 系统将已证实的DynaCal校准技术结合到一个在线的全自动系统中,该系统专为程序控制和复原而设计的,价格低廉。